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Finding the Fourth Proportional to 1,551,978,924.68, 2,141,411,199.60 and 891,801,656.84

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Solution

The fourth proportional to 1,551,978,924.68, 2,141,411,199.60 and 891,801,656.84 is: 1,230,502,570.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551,978,924.68 : 2,141,411,199.60 = 891,801,656.84 : x
  2. Step 2: Convert to fraction form
    1,551,978,924.68/2,141,411,199.60 = 891,801,656.84/x
  3. Step 3: Cross multiply
    1,551,978,924.68x = 2,141,411,199.60 × 891,801,656.84
  4. Step 4: Simplify right side
    1,551,978,924.68x = 1,909,714,055,779,011,840
  5. Step 5: Solve for x
    x = 1,909,714,055,779,011,840/1,551,978,924.68
  6. Step 6: Final answer
    x = 1,230,502,570.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.